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Apophyllite
Apophyllite

Dravite
Dravite



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Apophyllite
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Dravite

Apophyllite and Dravite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.30-2.503.03-3.18
Amber
1 7.18
1.5 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
1.6 Cleavage
Perfect on (001)
{???} Indistinct
1.7 Mohs Hardness
4.5-57-7.5
Amber
2 10
1.8 Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Apophyllite and Dravite Chemical Formula

While comparing Apophyllite and Dravite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Apophyllite and Dravite chemical formula.

  • Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
  • Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Apophyllite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.